/*-
 * Copyright (c) 1991, 1993, 1994
 *  The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *  @(#)unistd.h    8.12 (Berkeley) 4/27/95
 * $FreeBSD$
 */

#ifndef _UNISTD_H_
#define _UNISTD_H_

#include <stdint.h>
#include <sys/cdefs.h>
#include <sys/types.h>          /* XXX adds too much pollution. */
//#include <sys/unistd.h>
//#include <sys/_null.h>
#include <sys/_timeval.h>
#include <MacTypes.h>

#ifndef _GID_T_DECLARED
typedef __gid_t     gid_t;
#define _GID_T_DECLARED
#endif

#ifndef _PID_T_DECLARED
typedef __pid_t     pid_t;
#define _PID_T_DECLARED
#endif

/*
#ifndef _SIZE_T_DECLARED
typedef __size_t    size_t;
#define _SIZE_T_DECLARED
#endif
*/

#ifndef _SSIZE_T_DECLARED
typedef __ssize_t   ssize_t;
#define _SSIZE_T_DECLARED
#endif

#ifndef _UID_T_DECLARED
typedef __uid_t     uid_t;
#define _UID_T_DECLARED
#endif

#ifndef _USECONDS_T_DECLARED
typedef __useconds_t    useconds_t;
#define _USECONDS_T_DECLARED
#endif

#define STDIN_FILENO    0   /* standard input file descriptor */
#define STDOUT_FILENO   1   /* standard output file descriptor */
#define STDERR_FILENO   2   /* standard error file descriptor */

#if __XSI_VISIBLE || __POSIX_VISIBLE >= 200112
#define F_ULOCK     0   /* unlock locked section */
#define F_LOCK      1   /* lock a section for exclusive use */
#define F_TLOCK     2   /* test and lock a section for exclusive use */
#define F_TEST      3   /* test a section for locks by other procs */
#endif

/*
 * POSIX options and option groups we unconditionally do or don't
 * implement.  This list includes those options which are exclusively
 * implemented (or not) in user mode.  Please keep this list in
 * alphabetical order.
 *
 * Anything which is defined as zero below **must** have an
 * implementation for the corresponding sysconf() which is able to
 * determine conclusively whether or not the feature is supported.
 * Anything which is defined as other than -1 below **must** have
 * complete headers, types, and function declarations as specified by
 * the POSIX standard; however, if the relevant sysconf() function
 * returns -1, the functions may be stubbed out.
 */
#define _POSIX_BARRIERS         200112L
#define _POSIX_CPUTIME          200112L
#define _POSIX_READER_WRITER_LOCKS  200112L
#define _POSIX_REGEXP           1
#define _POSIX_SHELL            1
#define _POSIX_SPAWN            200112L
#define _POSIX_SPIN_LOCKS       200112L
#define _POSIX_THREAD_ATTR_STACKADDR    200112L
#define _POSIX_THREAD_ATTR_STACKSIZE    200112L
#define _POSIX_THREAD_CPUTIME       200112L
#define _POSIX_THREAD_PRIO_INHERIT  200112L
#define _POSIX_THREAD_PRIO_PROTECT  200112L
#define _POSIX_THREAD_PRIORITY_SCHEDULING 200112L
#define _POSIX_THREAD_PROCESS_SHARED    -1
#define _POSIX_THREAD_SAFE_FUNCTIONS    -1
#define _POSIX_THREAD_SPORADIC_SERVER   -1
#define _POSIX_THREADS          200112L
#define _POSIX_TRACE            -1
#define _POSIX_TRACE_EVENT_FILTER   -1
#define _POSIX_TRACE_INHERIT        -1
#define _POSIX_TRACE_LOG        -1
#define _POSIX2_C_BIND          200112L /* mandatory */
#define _POSIX2_C_DEV           -1 /* need c99 utility */
#define _POSIX2_CHAR_TERM       1
#define _POSIX2_FORT_DEV        -1 /* need fort77 utility */
#define _POSIX2_FORT_RUN        200112L
#define _POSIX2_LOCALEDEF       -1
#define _POSIX2_PBS         -1
#define _POSIX2_PBS_ACCOUNTING      -1
#define _POSIX2_PBS_CHECKPOINT      -1
#define _POSIX2_PBS_LOCATE      -1
#define _POSIX2_PBS_MESSAGE     -1
#define _POSIX2_PBS_TRACK       -1
#define _POSIX2_SW_DEV          -1 /* XXX ??? */
#define _POSIX2_UPE         200112L
#define _V6_ILP32_OFF32         -1
#define _V6_ILP32_OFFBIG        0
#define _V6_LP64_OFF64          0
#define _V6_LPBIG_OFFBIG        -1

#if __XSI_VISIBLE
#define _XOPEN_CRYPT            -1 /* XXX ??? */
#define _XOPEN_ENH_I18N         -1 /* mandatory in XSI */
#define _XOPEN_LEGACY           -1
#define _XOPEN_REALTIME         -1
#define _XOPEN_REALTIME_THREADS     -1
#define _XOPEN_UNIX         -1
#endif

/* Define the POSIX.2 version we target for compliance. */
#define _POSIX2_VERSION     199212L

/*
 * POSIX-style system configuration variable accessors (for the
 * sysconf function).  The kernel does not directly implement the
 * sysconf() interface; rather, a C library stub translates references
 * to sysconf() into calls to sysctl() using a giant switch statement.
 * Those that are marked `user' are implemented entirely in the C
 * library and never query the kernel.  pathconf() is implemented
 * directly by the kernel so those are not defined here.
 */
#define _SC_ARG_MAX      1
#define _SC_CHILD_MAX        2
#define _SC_CLK_TCK      3
#define _SC_NGROUPS_MAX      4
#define _SC_OPEN_MAX         5
#define _SC_JOB_CONTROL      6
#define _SC_SAVED_IDS        7
#define _SC_VERSION      8
#define _SC_BC_BASE_MAX      9 /* user */
#define _SC_BC_DIM_MAX      10 /* user */
#define _SC_BC_SCALE_MAX    11 /* user */
#define _SC_BC_STRING_MAX   12 /* user */
#define _SC_COLL_WEIGHTS_MAX    13 /* user */
#define _SC_EXPR_NEST_MAX   14 /* user */
#define _SC_LINE_MAX        15 /* user */
#define _SC_RE_DUP_MAX      16 /* user */
#define _SC_2_VERSION       17 /* user */
#define _SC_2_C_BIND        18 /* user */
#define _SC_2_C_DEV     19 /* user */
#define _SC_2_CHAR_TERM     20 /* user */
#define _SC_2_FORT_DEV      21 /* user */
#define _SC_2_FORT_RUN      22 /* user */
#define _SC_2_LOCALEDEF     23 /* user */
#define _SC_2_SW_DEV        24 /* user */
#define _SC_2_UPE       25 /* user */
#define _SC_STREAM_MAX      26 /* user */
#define _SC_TZNAME_MAX      27 /* user */

#if __POSIX_VISIBLE >= 199309
#define _SC_ASYNCHRONOUS_IO 28
#define _SC_MAPPED_FILES    29
#define _SC_MEMLOCK     30
#define _SC_MEMLOCK_RANGE   31
#define _SC_MEMORY_PROTECTION   32
#define _SC_MESSAGE_PASSING 33
#define _SC_PRIORITIZED_IO  34
#define _SC_PRIORITY_SCHEDULING 35
#define _SC_REALTIME_SIGNALS    36
#define _SC_SEMAPHORES      37
#define _SC_FSYNC       38
#define _SC_SHARED_MEMORY_OBJECTS 39
#define _SC_SYNCHRONIZED_IO 40
#define _SC_TIMERS      41
#define _SC_AIO_LISTIO_MAX  42
#define _SC_AIO_MAX     43
#define _SC_AIO_PRIO_DELTA_MAX  44
#define _SC_DELAYTIMER_MAX  45
#define _SC_MQ_OPEN_MAX     46
#define _SC_PAGESIZE        47
#define _SC_RTSIG_MAX       48
#define _SC_SEM_NSEMS_MAX   49
#define _SC_SEM_VALUE_MAX   50
#define _SC_SIGQUEUE_MAX    51
#define _SC_TIMER_MAX       52
#endif

#if __POSIX_VISIBLE >= 200112
#define _SC_2_PBS       59 /* user */
#define _SC_2_PBS_ACCOUNTING    60 /* user */
#define _SC_2_PBS_CHECKPOINT    61 /* user */
#define _SC_2_PBS_LOCATE    62 /* user */
#define _SC_2_PBS_MESSAGE   63 /* user */
#define _SC_2_PBS_TRACK     64 /* user */
#define _SC_ADVISORY_INFO   65
#define _SC_BARRIERS        66 /* user */
#define _SC_CLOCK_SELECTION 67
#define _SC_CPUTIME     68
#define _SC_FILE_LOCKING    69
#define _SC_GETGR_R_SIZE_MAX    70 /* user */
#define _SC_GETPW_R_SIZE_MAX    71 /* user */
#define _SC_HOST_NAME_MAX   72
#define _SC_LOGIN_NAME_MAX  73
#define _SC_MONOTONIC_CLOCK 74
#define _SC_MQ_PRIO_MAX     75
#define _SC_READER_WRITER_LOCKS 76 /* user */
#define _SC_REGEXP      77 /* user */
#define _SC_SHELL       78 /* user */
#define _SC_SPAWN       79 /* user */
#define _SC_SPIN_LOCKS      80 /* user */
#define _SC_SPORADIC_SERVER 81
#define _SC_THREAD_ATTR_STACKADDR 82 /* user */
#define _SC_THREAD_ATTR_STACKSIZE 83 /* user */
#define _SC_THREAD_CPUTIME  84 /* user */
#define _SC_THREAD_DESTRUCTOR_ITERATIONS 85 /* user */
#define _SC_THREAD_KEYS_MAX 86 /* user */
#define _SC_THREAD_PRIO_INHERIT 87 /* user */
#define _SC_THREAD_PRIO_PROTECT 88 /* user */
#define _SC_THREAD_PRIORITY_SCHEDULING 89 /* user */
#define _SC_THREAD_PROCESS_SHARED 90 /* user */
#define _SC_THREAD_SAFE_FUNCTIONS 91 /* user */
#define _SC_THREAD_SPORADIC_SERVER 92 /* user */
#define _SC_THREAD_STACK_MIN    93 /* user */
#define _SC_THREAD_THREADS_MAX  94 /* user */
#define _SC_TIMEOUTS        95 /* user */
#define _SC_THREADS     96 /* user */
#define _SC_TRACE       97 /* user */
#define _SC_TRACE_EVENT_FILTER  98 /* user */
#define _SC_TRACE_INHERIT   99 /* user */
#define _SC_TRACE_LOG       100 /* user */
#define _SC_TTY_NAME_MAX    101 /* user */
#define _SC_TYPED_MEMORY_OBJECTS 102
#define _SC_V6_ILP32_OFF32  103 /* user */
#define _SC_V6_ILP32_OFFBIG 104 /* user */
#define _SC_V6_LP64_OFF64   105 /* user */
#define _SC_V6_LPBIG_OFFBIG 106 /* user */
#define _SC_IPV6        118
#define _SC_RAW_SOCKETS     119
#define _SC_SYMLOOP_MAX     120
#endif

#if __XSI_VISIBLE
#define _SC_ATEXIT_MAX      107 /* user */
#define _SC_IOV_MAX     56
#define _SC_PAGE_SIZE       _SC_PAGESIZE
#define _SC_XOPEN_CRYPT     108 /* user */
#define _SC_XOPEN_ENH_I18N  109 /* user */
#define _SC_XOPEN_LEGACY    110 /* user */
#define _SC_XOPEN_REALTIME  111
#define _SC_XOPEN_REALTIME_THREADS 112
#define _SC_XOPEN_SHM       113
#define _SC_XOPEN_STREAMS   114
#define _SC_XOPEN_UNIX      115
#define _SC_XOPEN_VERSION   116
#define _SC_XOPEN_XCU_VERSION   117 /* user */
#endif

#if __BSD_VISIBLE
#define _SC_NPROCESSORS_CONF    57
#define _SC_NPROCESSORS_ONLN    58
#define _SC_CPUSET_SIZE     122
#endif

/* Extensions found in Solaris and Linux. */
#define _SC_PHYS_PAGES      121

/* Keys for the confstr(3) function. */
#if __POSIX_VISIBLE >= 199209
#define _CS_PATH        1   /* default value of PATH */
#endif

#if __POSIX_VISIBLE >= 200112
#define _CS_POSIX_V6_ILP32_OFF32_CFLAGS     2
#define _CS_POSIX_V6_ILP32_OFF32_LDFLAGS    3
#define _CS_POSIX_V6_ILP32_OFF32_LIBS       4
#define _CS_POSIX_V6_ILP32_OFFBIG_CFLAGS    5
#define _CS_POSIX_V6_ILP32_OFFBIG_LDFLAGS   6
#define _CS_POSIX_V6_ILP32_OFFBIG_LIBS      7
#define _CS_POSIX_V6_LP64_OFF64_CFLAGS      8
#define _CS_POSIX_V6_LP64_OFF64_LDFLAGS     9
#define _CS_POSIX_V6_LP64_OFF64_LIBS        10
#define _CS_POSIX_V6_LPBIG_OFFBIG_CFLAGS    11
#define _CS_POSIX_V6_LPBIG_OFFBIG_LDFLAGS   12
#define _CS_POSIX_V6_LPBIG_OFFBIG_LIBS      13
#define _CS_POSIX_V6_WIDTH_RESTRICTED_ENVS  14
#endif

__BEGIN_DECLS
/* 1003.1-1990 */
#ifdef __clang__
void     _exit(int) __dead2;
#endif

int  access(const char *, int);
unsigned int     alarm(unsigned int);
int  chdir(const char *);
int  chown(const char *, uid_t, gid_t);
int  close(int);
void     closefrom(int);
int  dup(int);
int  dup2(int, int);
int  execl(const char *, const char *, ...);
int  execle(const char *, const char *, ...);
int  execlp(const char *, const char *, ...);
/*
int  execv(const char *, char * const *);
int  execve(const char *, char * const *, char * const *);
int  execvp(const char *, char * const *);
*/
pid_t    fork(void);
long     fpathconf(int, int);
char    *getcwd(char *, size_t);
gid_t    getegid(void);
uid_t    geteuid(void);
gid_t    getgid(void);
int  getgroups(int, gid_t []);
char    *getlogin(void);
pid_t    getpgrp(void);
pid_t    getpid(void);
pid_t    getppid(void);
uid_t    getuid(void);
int  isatty(int);
int  link(const char *, const char *);
#ifndef _LSEEK_DECLARED
#define _LSEEK_DECLARED
off_t    lseek(int, off_t, int);
#endif
long     pathconf(const char *, int);
int  pause(void);
int  pipe(int *);
ssize_t  read(int, void *, size_t);
int  rmdir(const char *);
int  setgid(gid_t);
int  setpgid(pid_t, pid_t);
pid_t    setsid(void);
int  setuid(uid_t);
unsigned int     sleep(unsigned int);
long     sysconf(int);
pid_t    tcgetpgrp(int);
int  tcsetpgrp(int, pid_t);
char    *ttyname(int);
int ttyname_r(int, char *, size_t);
//int    unlink(const char *);
ssize_t  write(int, const void *, size_t);

/* 1003.2-1992 */
#if __POSIX_VISIBLE >= 199209 || __XSI_VISIBLE
size_t   confstr(int, char *, size_t);
#ifndef _GETOPT_DECLARED
#define _GETOPT_DECLARED
int  getopt(int, char * const [], const char *);

extern char *optarg;            /* getopt(3) external variables */
extern int optind, opterr, optopt;
#endif /* _GETOPT_DECLARED */
#endif

/* ISO/IEC 9945-1: 1996 */
#if __POSIX_VISIBLE >= 199506 || __XSI_VISIBLE
int  fsync(int);

/*
 * ftruncate() was in the POSIX Realtime Extension (it's used for shared
 * memory), but truncate() was not.
 */
#ifndef _FTRUNCATE_DECLARED
#define _FTRUNCATE_DECLARED
int  ftruncate(int, off_t);
#endif
#endif

#if __POSIX_VISIBLE >= 199506
int  getlogin_r(char *, int);
#endif

/* 1003.1-2001 */
#if __POSIX_VISIBLE >= 200112 || __XSI_VISIBLE
int  fchown(int, uid_t, gid_t);
ssize_t  readlink(const char * __restrict, char * __restrict, size_t);
#endif
#if __POSIX_VISIBLE >= 200112
//int    gethostname(char *, size_t);
int  setegid(gid_t);
int  seteuid(uid_t);
#endif

/* 1003.1-2008 */
#if __POSIX_VISIBLE >= 200809 || __XSI_VISIBLE
int  getsid(pid_t _pid);
int  fchdir(int);
int  getpgid(pid_t _pid);
int  lchown(const char *, uid_t, gid_t);
ssize_t  pread(int, void *, size_t, off_t);
ssize_t  pwrite(int, const void *, size_t, off_t);

/* See comment at ftruncate() above. */
#ifndef _TRUNCATE_DECLARED
#define _TRUNCATE_DECLARED
int  truncate(const char *, off_t);
#endif
#endif /* __POSIX_VISIBLE >= 200809 || __XSI_VISIBLE */

#if __POSIX_VISIBLE >= 200809
int faccessat(int, const char *, int, int);
int fchownat(int, const char *, uid_t, gid_t, int);
int fexecve(int, char *const [], char *const []);
int linkat(int, const char *, int, const char *, int);
ssize_t readlinkat(int, const char * __restrict, char * __restrict, size_t);
int symlinkat(const char *, int, const char *);
int unlinkat(int, const char *, int);
#endif /* __POSIX_VISIBLE >= 200809 */

/*
 * symlink() was originally in POSIX.1a, which was withdrawn after
 * being overtaken by events (1003.1-2001).  It was in XPG4.2, and of
 * course has been in BSD since 4.2.
 */
#if __POSIX_VISIBLE >= 200112 || __XSI_VISIBLE >= 402
int  symlink(const char * __restrict, const char * __restrict);
#endif

/* X/Open System Interfaces */
#if __XSI_VISIBLE
char    *crypt(const char *, const char *);
/* char *ctermid(char *); */        /* XXX ??? */
int  encrypt(char *, int);
long     gethostid(void);
int  lockf(int, int, off_t);
int  nice(int);
int  setregid(gid_t, gid_t);
int  setreuid(uid_t, uid_t);

#ifdef STARBOARD_EXCLUDED
#ifndef _SWAB_DECLARED
#define _SWAB_DECLARED
void     swab(const void * __restrict, void * __restrict, ssize_t);
#endif /* _SWAB_DECLARED */
#endif

void     sync(void);

#endif /* __XSI_VISIBLE */

#if (__XSI_VISIBLE && __XSI_VISIBLE <= 500) || __BSD_VISIBLE
int  brk(const void *);
int  chroot(const char *);
int  getdtablesize(void);
int  getpagesize(void) __pure2;
char    *getpass(const char *);
void    *sbrk(intptr_t);
#endif

#if (__XSI_VISIBLE && __XSI_VISIBLE <= 600) || __BSD_VISIBLE
char    *getwd(char *);         /* obsoleted by getcwd() */
useconds_t
     ualarm(useconds_t, useconds_t);
int  usleep(useconds_t);
pid_t    vfork(void) __returns_twice;
#endif

#if __BSD_VISIBLE

int  acct(const char *);
int  async_daemon(void);
int  check_utility_compat(const char *);
const char *
     crypt_get_format(void);
int  crypt_set_format(const char *);
int  des_cipher(const char *, char *, long, int);
int  des_setkey(const char *key);
int  dup3(int, int, int);
int  eaccess(const char *, int);
void     endusershell(void);
int  exect(const char *, char * const *, char * const *);
int  execvP(const char *, const char *, char * const *);
int  feature_present(const char *);
char    *fflagstostr(u_long);
int  getdomainname(char *, int);
int  getgrouplist(const char *, gid_t, gid_t *, int *);
int  getloginclass(char *, size_t);
mode_t   getmode(const void *, mode_t);
int  getosreldate(void);
int  getpeereid(int, uid_t *, gid_t *);
int  getresgid(gid_t *, gid_t *, gid_t *);
int  getresuid(uid_t *, uid_t *, uid_t *);
char    *getusershell(void);
int  initgroups(const char *, gid_t);
int  iruserok(unsigned long, int, const char *, const char *);
int  iruserok_sa(const void *, int, int, const char *, const char *);
int  issetugid(void);
void    __FreeBSD_libc_enter_restricted_mode(void);
long     lpathconf(const char *, int);
#ifndef _MKDTEMP_DECLARED
char    *mkdtemp(char *);
#define _MKDTEMP_DECLARED
#endif
#ifndef _MKNOD_DECLARED
int  mknod(const char *, mode_t, dev_t);
#define _MKNOD_DECLARED
#endif
#ifndef _MKSTEMP_DECLARED
int  mkstemp(char *);
#define _MKSTEMP_DECLARED
#endif
int  mkstemps(char *, int);
#ifndef _MKTEMP_DECLARED
char    *mktemp(char *);
#define _MKTEMP_DECLARED
#endif
int  nfssvc(int, void *);
int  nlm_syscall(int, int, int, char **);
int  pipe2(int *, int);
int  profil(char *, size_t, vm_offset_t, int);
int  rcmd(char **, int, const char *, const char *, const char *, int *);
int  rcmd_af(char **, int, const char *,
        const char *, const char *, int *, int);
int  rcmdsh(char **, int, const char *,
        const char *, const char *, const char *);
char    *re_comp(const char *);
int  re_exec(const char *);
int  reboot(int);
int  revoke(const char *);
pid_t    rfork(int);
pid_t    rfork_thread(int, void *, int (*)(void *), void *);
int  rresvport(int *);
int  rresvport_af(int *, int);
int  ruserok(const char *, int, const char *, const char *);
#if __BSD_VISIBLE
#ifndef _SELECT_DECLARED
#define _SELECT_DECLARED
//int    select(int, fd_set *, fd_set *, fd_set *, struct timeval *);
#endif
#endif
int  setdomainname(const char *, int);
int  setgroups(int, const gid_t *);
void     sethostid(long);
int  sethostname(const char *, int);
#ifndef _SETKEY_DECLARED
int  setkey(const char *);
#define _SETKEY_DECLARED
#endif
int  setlogin(const char *);
int  setloginclass(const char *);
void    *setmode(const char *);
int  setpgrp(pid_t, pid_t);         /* obsoleted by setpgid() */
void     setproctitle(const char *_fmt, ...) __printf0like(1, 2);
int  setresgid(gid_t, gid_t, gid_t);
int  setresuid(uid_t, uid_t, uid_t);
int  setrgid(gid_t);
int  setruid(uid_t);
void     setusershell(void);
int  strtofflags(char **, u_long *, u_long *);
int  swapon(const char *);
int  swapoff(const char *);
int  syscall(int, ...);
off_t    __syscall(quad_t, ...);
int  undelete(const char *);
int  unwhiteout(const char *);
void    *valloc(size_t);            /* obsoleted by malloc() */

#ifndef _OPTRESET_DECLARED
#define _OPTRESET_DECLARED
extern int optreset;            /* getopt(3) external variable */
#endif
#endif /* __BSD_VISIBLE */
__END_DECLS

#endif /* !_UNISTD_H_ */
